Best Includes Source SDK Games on Steam
| Name | Release Date | Current Players | All-Time Peak | Rating | |
|---|---|---|---|---|---|
|
Left 4 Dead 2 | 16 Nov, 2009 | 62 905 | 69 939 | 96.74 |
|
Garry's Mod | 29 Nov, 2006 | 27 745 | 38 330 | 96.04 |
|
Counter-Strike: Source | 1 Nov, 2004 | 8 459 | 14 784 | 95.07 |
|
Left 4 Dead | 17 Nov, 2008 | 2 166 | 2 213 | 94.63 |
|
No More Room in Hell | 31 Oct, 2013 | 1 275 | 2 119 | 88.55 |
|
Half-Life 2 | 16 Nov, 2004 | 1 019 | 3 630 | 96.38 |
|
Portal | 10 Oct, 2007 | 755 | 2 092 | 97.17 |
|
Black Mesa | 6 Mar, 2020 | 678 | 1 968 | 93.95 |
|
Alien Swarm: Reactive Drop | 20 Apr, 2017 | 361 | 664 | 92.75 |
|
Day of Defeat: Source | 12 Jul, 2010 | 350 | 677 | 89.61 |
|
Half-Life 2: Episode Two | 10 Oct, 2007 | 223 | 530 | 95.15 |
|
Half-Life 2: Episode One | 1 Jun, 2006 | 164 | 517 | 93.76 |
|
Half-Life 2: Deathmatch | 1 Nov, 2004 | 163 | 274 | 88.45 |
|
Pool Nation FX Lite | 7 Dec, 2015 | 149 | 308 | 70.05 |
|
Astro Colony | 7 Nov, 2022 | 116 | 742 | 79.32 |
|
Fistful of Frags | 9 May, 2014 | 94 | 206 | 89.62 |
|
Selaco | 30 May, 2024 | 45 | 1 104 | 89.76 |
|
Day of Infamy | 23 Mar, 2017 | 34 | 63 | 81.04 |
|
Zombie Panic! Source | 3 Oct, 2008 | 31 | 74 | 82.24 |
|
BrainBread 2 | 9 Mar, 2022 | 22 | 25 | 71.51 |
|
Pirates, Vikings, and Knights II | 12 Feb, 2010 | 15 | 65 | 84.90 |
|
Battle Grounds III | 30 Jun, 2019 | 12 | 162 | 82.86 |
|
Sunrise: survival | 3 Aug, 2017 | 11 | 19 | 49.41 |
|
Double Action: Boogaloo | 23 Oct, 2014 | 11 | 27 | 90.37 |
|
Hidden Through Time 2: Discovery | To be announced | 9 | 44 | 77.65 |
|
Absorber | 9 Jul, 2023 | 6 | 70 | 71.15 |
|
Kreedz Climbing | 15 Jun, 2017 | 3 | 10 | 78.15 |
|
Star Crusade CCG | 7 Sep, 2016 | 1 | 1 | 77.03 |
|
Kingdom of Atham: Crown of the Champions | 12 Jan, 2024 | 1 | 26 | 73.54 |
|
Feudal Friends | 17 Jul, 2023 | 1 | 501 | 59.27 |
|
AfterImpaKt | Coming soon | 0 | 0 | |
|
Pathfinder Adventures - Character Alts 1 | 15 Jun, 2017 | 0 | 0 | 0.00 |
|
Logistique Act. 1 | 12 Sep, 2020 | 0 | 0 | |
|
CatClick | 2 Aug, 2024 | 0 | 0 | |
|
Pool Nation FX - Unlock Online | 7 Dec, 2015 | 0 | 0 | 66.76 |
|
Borderless Gaming - Donation #1 | 7 Aug, 2015 | 0 | 0 | |
|
Frame of Mind - A game of thoughts. | Q4 2023 | 0 | 0 | |
|
City of Ages: Picture Supportive Text MUD (server and client included) | 13 Oct, 2017 | 0 | 1 | 70.08 |
|
Party Club Demo | 18 Jun, 2024 | 0 | 0 | |
|
Pool Nation FX - Unlock Cues | 7 Oct, 2015 | 0 | 0 | 0.00 |
|
Emoto | 26 Sep, 2018 | 0 | 0 | 58.33 |
|
Evacuation | 6 Jan, 2023 | 0 | 0 | |
|
Istrolid - Curves and Shadows | 29 May, 2017 | 0 | 0 | |
|
Escape And Build | 3 Jun, 2024 | 0 | 0 | |
|
Lost Squad | Coming soon | 0 | 0 | |
| forclaz - DLC 3 | 0 | 0 | |||
|
RedTower Demo | 19 Aug, 2022 | 0 | 0 | |
|
Emperor Content Pack | 22 Jun, 2016 | 0 | 0 | |
|
Questscape | 2024 | 0 | 0 | |
|
Blade Symphony | 7 May, 2014 | 0 | 26 | 64.55 |